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Frequently Asked Questions

If I already have a double-pane window, is that energy efficient?

Although double-pane is more significantly insulative than a single pane window, you should be aware of the age of your windows. If your double-pane windows are older than 20 years, chances are, the seals have cracked, and there may be leakage. Also, old double-pane windows were made in an era before many of the advanced technologies like gas fillings, vinyl frames, and low-conductive spacers were readily available. Many of our homeowners replace old double-pane windows with new ones, and see significant energy savings.

What is the difference between vinyl windows and other windows?

A vinyl window is actually referring to the frame, not the glass itself. Glass panes remain “made of glass”. But the frame, the material along the edges that holds the window together, can be made of many kinds of material, including aluminum, vinyl (pvc), and wood. Vinyl has a low conductive property, which means that the temperature between outside and inside stay apart longer, and don’t pass through as easily as metal. This is the energy efficiency we refer to from vinyl windows.

Are windows from Canada different than windows from the USA?

What is most important to look for is the Energy Star Certified in Canada label. It is similar to the ratings system in the States; but for the Canadian market. Because Canada’s overall climate is trends towards colder winters, it is essential to have high-efficiency windows. Delco Windows & Doors carries a full line of certified high-efficiency windows.

What are gas-filled windows?

When a window is filled with gas, Argon, (and sometimes krypton and xenon) is injected into the space between the glass panes of the window. This forms a denser barrier, functioning much like water, that slows down the temperature transfer between the inside and outside of a window. Gas-filled windows are one of many features that help create energy efficiency. Older windows in your home likely do not have this gas-filled feature, as it a more recent development over the past 20 years.

Do I need to get a permit to install a new window?

A permit is required in the event that you will be making structural or material changes to your house as part of the installation. In other words if you are creating new openings, or increasing the size of your windows, a permit is necessary.

I want to make a larger window than what is already there. Can I do that?

In some cases, yes. However, it all depends on the load-bearing nature of the studs in your wall near the vertical sides (jambs) of your window. If they are transferring significant structural load around your window, it is not wise to adjust the width. Often times, the height of a window, however, is easier to change; still providing you a larger, more spacious, window.

Are Delco Windows & Doors made in Canada?

All our windows and doors are custom manufactured here in Canada. All components assembly is done right here, contributing to the Canadian and local Toronto economy. Delco is part of the manufacturing process. But we also offer service of design, installation, and follow-up.

Can I purchase a Delco Window, and have someone else install it?

While we can simply provide the actual window or door itself, and let you obtain your own installer, it is recommended that Delco handle the entire process. The transferrable warranty is available for full-service installations.

I want to stick with aluminum frame windows. Are there ones that are more energy efficient?

While our specialty is high-efficiency replacement vinyl windows, we do offer some other frame materials, including wood-aluminum hybrid frames, and newer aluminum framing, which has some of the energy efficient benefits of vinyl.

I see condensation inside my window glass. What should I do?

Condensation inside window panes is typically due to broken seals around the window, which let air transfer into the pane. Once this happens, the window glass loses much of its insulative properties. While in theory, the glass could be resealed, it is difficult and expensive to remove the unsightly condensation, as well as correct the future possibility of it happening again. It is best to replace the window altogether. New vinyl frame windows have better, longer-lasting seals.

How much money does an entry door cost?

There is a wide range of prices for entry doors. Steel entry doors are on the lower-range, about $1,000 - $2,500 CAD range. Fiberglass doors, with their sophisticated insulative materials, can range from $2,500- $3,000. Depending on installation options, these prices may change.

Does Delco warranty their products?

We offer a transferable warranty for our window and door products, all parts, as well as labour. Ask us for details.

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What Homeowners Say


Amazing service and quality products. Installation was on time and on budget. Our windows look awesome. Edan gave us his full attention from the first call and every step of the way after. Highly recommend.

Adam Rivers Reviewer Image

Adam Rivers


New windows and door for basement and new metal/glass back door for main house - even through my indecisiveness and the covid-19 challenges Ayal and his installers were patient with me and I am very happy with the look and quality of the install.

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Geraint Reviewer Image



It was a pleasure dealing with Jack and all Delco's stuff. The windows arrived on the date for which were promised. The quality of the service, product and workmanship were excellent. I would gladly recommend Delco to anyone need Windows and Doors

Ruven Y. Reviewer Image

Ruven Y.


We're so happy with our new front door. Very high quality finish, beautiful window. Installation was impeccable and done very quickly. Hinge and 3-point lock mechanism fit perfectly and feel very solid. Very attentive customer service. Door really ups our curb appeal!

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Jim Bird


I just had my front door replaced and cannot say enough good things about this company. From start to finish their professionalism is outstanding, and the workmanship excellent. Would highly recommend

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Maureen Fuller


Delco supplies my windows and doors for renovations throughout the GTA. Edan and his staff are the best. Well priced quality products and personalized service. Highly recommended.

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Noah Klar Reviewer Image

Noah Klar


We have 3 sliding doors and a double front door replaced. All work was done professionally but well qualified craftsman. Watching them work it was clear they new what they were doing and work is first class.

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R. Pierce


We used Delco to replace our windows and patio door and door glass inserts. We are very happy with the quality of the windows and patio door and were very impressed with the installers as well who were very professional and clean. Thank you Nasho and George for your hard work and patience. Also, a big thank you to Ayal who always returned my calls and answered all my questions.

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Sandra Reviewer Image



Delco provided all the exterior doors for our new home build. Ayal was great and the company is very customer service oriented. The doors look beautiful, the hardware is high end and the install went very well. Overall we are very happy with the product and service.

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Sarah Reviewer Image



Ayal and Edan were great to work with. They provided extensive product knowledge and had a great selection in their showroom. The windows and doors changed the whole look of the house and gave a much needed modern yet classic update. Great quality and workmanship! Thank you!

Stephanie Lannaci Reviewer Image

Stephanie Lannaci


Both my wife and I could not have been happier with the product and service displayed by the owner and the installers. They had kept true to there word and the timelines. The process was catered to our schedule and was seamless.

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Fabrizio Macieri


Had a great experience with Delco. They were professional and did a great job on time.

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Joey Oliveira


Our experience with Delco Doors has been very good. We needed to replace out front door. Our old 6 feet Steel doors were removed and replaced with Delco 8 feet Fiberglass Doors. The installation went very smoothly, and the guys made sure that everything was fitting squarely and tight. They cleaned up after they were done and were very pleasant to work with. Would highly recommend them.

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Angie Gandhi


A fantastic company to deal with from start to finish. They were professional, courteous and the project was completed in the timeframe agreed upon. Would highly recommend Delco.

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Linda Reviewer Image



I would recommend Delco Windows and Doors without any hesitation. The quality of the products is very good, the installation exceeded my expectations and the responsiveness and punctuality is impressive.

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Serban Dinca


Very good and timely service. A pleasure to work with Edan Next time I need windows and doors I will definitely call them again

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Adrian Nema


Recently ordered a custom window from Delco. We are extremely happy with the level of customer service - Elyse went out of her way to notify us when the window came in and came in to work on her day off so we could come pick up the window. If we need another window we will definitely come back to Delco!

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Jonathon & Sheri Mcintosh


I would highly recommend this company, the final product was beyond my expectations, My new front door makes my house standout so happy thank you Delco Windows and doors. I will definitely use Delco Windows and doors again in the future thanks to Edan and the installers

Maria Reviewer Image



Existing door replacement is a delicate project. I am very satisfied with job well done by Ayal Jack and his installer. Highly professional team, they know their business well, easy to deal with, very accommodating. He guided us step by step to select the best fit for our purpose.

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Alfy Reviewer Image



I would highly recommend this company. They were very easy to deal with, accommodating and professional. The final product was beyond my expectations. The products completely transformed the front of my house and for sure increased its value and curb appeal. Thanks!

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Mi Reviewer Image



Happy experience from start to finish. Thank you to Edan for going out of his way to meet us late one evening and his helpful consultation in the showroom especially thank you to the extremely professional, clean and friendly crew of installers. Everything was as promised, the men arrived on time, their work was immaculate and complete, their craftsmanship beyond reproach.

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Esther Tobin

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We’ll Come To You!


Quality New Windows & Doors. Competitively Priced!

Christine R.

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